Even though they're fairly old at this point, having been formally unveiled at the IFA trade show in Berlin back in August 2018, the Sony WH-1000XM3 are still undoubtedly among the best wireless over-ear headphones in the sub-$400 price bracket. 

Typically available for around 350 bucks, these incredibly popular Bluetooth audio accessories for your iPhone or Android handset have frequently and deeply been discounted in recent months by various top-rated eBay sellers, as well as major authorized retailers like Best Buy and Amazon. Currently, you can find these bad boys priced ...